Yeah, def don't want to add it to your tank. And I'm sure it would reek havoc on the biological filtration if you dipped LR. But for treating new coming corals....

I just pulled a rubble rock with algae and placed it in HP. I'm going to let it soak for a few minutes and rinse off before replacing it. Asterinas and mini serpents floated to the top immediately! I grabbed a mini serpent within 2 seconds of being in the solution, trying to save him, but he was already dead. I could imagine it being very effective against nudis and flatworms. The pods were scrambling for dry land ( i didn't fully submerge the rock).